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Flexography

What is Flexography?

Flexography is a high‑speed printing process that uses flexible relief printing plates to print onto a wide range of materials, including paper, card, plastic films, foil, and corrugated board.

It is most commonly used for packaging, especially food packaging, labels, carrier bags, and cartons.

Why It Is Called Flexography

The name flexography comes from: - The use of flexible rubber or polymer plates - These plates bend around cylinders - This allows printing onto uneven or flexible surfaces

This makes flexography ideal for packaging materials.

How Flexography Works

Flexography is a relief printing process, meaning the image is raised on the plate.

Step‑by‑Step Process

  1. The flexible printing plate is mounted on a cylinder
  2. Ink is picked up by an anilox roller (engraved roller)
  3. Excess ink is removed, leaving a controlled amount
  4. Ink is transferred to the raised areas of the plate
  5. The plate presses the ink directly onto the material
  6. The ink dries quickly, often using heat or UV light

The process runs continuously at very high speed.

The Printing Plate

  • Made from rubber or photopolymer
  • Image areas are raised
  • Non‑image areas are recessed
  • Plates are lightweight and flexible
  • Each colour requires a separate plate

Plates are created using digital plate‑making systems.

Inks Used in Flexography

Flexography uses fast‑drying inks, including: - Water‑based inks - Solvent‑based inks - UV‑curable inks

These inks dry quickly, making flexography ideal for non‑absorbent materials.

Materials That Can Be Printed On

Flexography is very versatile and can print on: - Paper and card - Corrugated board - Plastic films - Aluminium foil - Laminates - Self‑adhesive labels

This wide material range is a major advantage.

Key Properties of Flexography

Feature Description
Print Quality Medium–High
Speed Very high
Set‑Up Cost Medium
Unit Cost Low for large runs
Material Range Very wide
Ink Drying Very fast

Advantages of Flexography

  • Very fast printing process
  • Suitable for large production runs
  • Can print on many materials
  • Low ink waste
  • Fast‑drying inks
  • Ideal for packaging
  • Cost‑effective for mass production

Disadvantages of Flexography

  • Lower print quality than offset lithography
  • Fine detail and images less sharp
  • Plates wear over time
  • High initial plate cost
  • Not ideal for short print runs
  • Design changes require new plates

Typical Uses in Product Design

Flexography is commonly used for: - Food packaging - Plastic bags - Labels - Cartons - Corrugated boxes - Wrapping paper - Tape and films

It is one of the most important packaging print processes.

Flexography vs Offset Lithography

Feature Flexography Offset Lithography
Print Quality Medium–High Very High
Best For Packaging Print media
Material Range Very wide Mostly paper
Speed Very high High
Set‑Up Cost Medium High

Sustainability and Environmental Impact

Advantages

  • Uses water‑based inks
  • Low ink waste
  • Efficient for large runs
  • Can print on recycled materials

Disadvantages

  • Plastic substrates are hard to recycle
  • Energy‑intensive machinery
  • Plate production waste

Improvements

  • Increased use of water‑based inks
  • Biodegradable packaging materials
  • Improved recycling of printed packaging

Health and Safety Considerations

  • Industrial machinery
  • Moving rollers and cylinders
  • Inks and solvents may be hazardous
  • Ventilation required
  • PPE used in commercial environments
  • Not suitable for school workshops

Suitability for Product Design

Flexography is suitable when: - Packaging is required - Large quantities are needed - Printing on plastic or card - Speed and efficiency are important

Flexography is not suitable when: - Very high image quality is required - Small print runs are needed - Designs change frequently - Fine photographic detail is essential

Exam Tips (A Level)

  • Identify flexography as a relief printing process
  • Mention flexible printing plates
  • Link process to packaging
  • Compare with offset lithography
  • Mention fast‑drying inks
  • Link to mass production

Key Keywords

  • Flexography
  • Relief printing
  • Flexible printing plate
  • Anilox roller
  • Packaging
  • Fast‑drying inks
  • Mass production

Overall Summary

Flexography is a high‑speed relief printing process that uses flexible printing plates and fast‑drying inks to print onto a wide range of materials, including plastic, card, foil, and corrugated board. It is particularly suited to packaging and label production, where speed, efficiency, and material versatility are essential. While flexography does not match offset lithography for fine detail and image quality, its low unit cost, fast production, and ability to print on non‑paper materials make it one of the most important commercial printing processes. In A Level Product Design, flexography should be evaluated in terms of its process, advantages and disadvantages, sustainability, and suitability for mass‑produced packaging.